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Table 1 Mean fecal concentrations (g/kg dry matter, DM), and estimates of fecal output (FO, g/d), and dry matter digestibility (DMD, g/kg DM) using acid-detergent insoluble ash (ADIA), and alkaline-peroxide lignin (APL) from feces sampled at different times compared with actual fecal concentrations, FO, and DMD values from total collection (TC)

From: Diurnal variation in fecal concentrations of acid-detergent insoluble ash and alkaline-peroxide lignin from cattle fed bermudagrass hays of varying nutrient content

Marker

Time of samplinga

  

P-valuec

1

2

3

4

TC

SEMb

Dd

T

D × T

Fecal concentration (g/kg DM)

 ADIA

59

58

61

58

58

4.0

<0.01

0.45

0.60

 APL

55

59

58

58

56

3.5

<0.01

0.22

0.92

FO (g/d)

 ADIA

4036

4069

3928

4073

4207

297.9

<0.01

0.64

0.78

 APL

4105

3903

3907

3922

4207

285.9

<0.01

0.38

0.99

DMD (g/kg DM)

 ADIA

557

554

574

551

539

22.9

<0.01

0.16

0.86

 APL

550

576

571

574

539

17.8

0.30

0.21

0.98

  1. aDifferent sampling times (1 = 06:00, 2 = 12:00, 3 = 18:00, and 4 = 24:00 h)
  2. bSEM, standard error of the mean
  3. cD, diet; T, sampling time; D × T, diet by sampling time interaction
  4. dD, diet consisted of low (L) CP hay (CP = 79 g/kg DM); medium low (ML) CP hay (CP = 111 g/kg DM); medium high (MH) CP hay (CP = 131 g/kg DM); and high (H) CP hay (CP = 164 g/kg DM)
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Journal of Animal Science and Biotechnology

ISSN: 2049-1891